Large threshold-free hydraulic watertight door

Abstract

This utility model relates to a large, threshold-free, hydraulic watertight door, comprising a door frame, a door panel, an electrical system, and a hydraulic system. The door panel and door frame are connected by a hinge device, and a locking device is installed between the door frame and the door panel. A track opening and closing device is provided on the inner side of the bottom of the door frame. The track opening and closing device includes a hydraulic cylinder and a connecting rod, which is hinged to the top of a section of track. The track can rest on the rear side of the door frame and be close to the door frame. A door panel opening and closing device is respectively provided on the left and right sides of the door frame near the center of the door panel. This large, threshold-free, hydraulic watertight door incorporates a track device with ball bearings arranged within it. The rotation of the ball bearings assists in lifting the door panel upwards, thereby reducing the power required by the hydraulic cylinder during the initial opening of the door panel, preventing damage to the connection between the cylinder and the door panel, and improving the safety of the hydraulic watertight door.

Description

Technical Field

[0001] This utility model relates to a large, threshold-free hydraulic watertight door, belonging to the field of marine technology. Background Technology

[0002] Some ship compartments require the entry of large objects, necessitating large, threshold-free hatches. Furthermore, to ensure the watertightness of the compartments, watertight doors are required to achieve a seal. While large, threshold-free watertight doors are available on the market, unlike smaller ones, they are significantly heavier, requiring considerable power to open. Due to the larger door panel, the hydraulic cylinder of the door opening mechanism is nearly vertical when the door is closed, resulting in a shorter lever arm. Therefore, a large amount of power is needed initially to open the door, making the connection between the hydraulic cylinder and the door panel susceptible to damage or even breakage during this initial opening phase. Utility Model Content

[0003] The purpose of this invention is to overcome the above-mentioned shortcomings and provide a large, threshold-free hydraulic watertight door that is easier to open, reduces damage to the connection points, and reduces the risk of breakage.

[0004] The purpose of this utility model is achieved as follows: A large, threshold-free hydraulic watertight door includes a door frame, door panel, electrical system, and hydraulic system. The door panel and door frame are connected by a hinge device, and a locking device is installed between the door frame and door panel. A track opening and closing device is provided on the inner side of the bottom of the door frame. The track opening and closing device includes a hydraulic cylinder and a connecting rod. The end of the hydraulic cylinder is hinged to the door frame via a connecting lug, and the front end of the hydraulic cylinder rod is hinged to one end of the connecting rod via a hinge. The other end of the connecting rod is hinged to the top of a section of track via a connecting lug. The hydraulic cylinder drives the track to move, allowing the track to fall behind and close to the door frame. Ball bearings are inserted into the track, filling the grooves of the track. The door panel can slide on the track. A door panel opening and closing device is provided on the left and right sides of the door frame near the center of the door panel. Each door panel opening and closing device includes a hydraulic cylinder. The end of the hydraulic cylinder is hinged to the door frame via a connecting lug, and the front end of the hydraulic cylinder rod is hinged to the back of the door panel via a connecting lug.

[0005] The electrical system is connected to the hydraulic system and also to the limit device. The hydraulic system is connected to the hinge device, locking device, track opening and closing device, and door panel opening and closing device.

[0006] The door frame is equipped with a limiting device at the highest point of the hinge mechanism's movement trajectory. This limiting device is an infrared sensor.

[0007] Sealing strips are installed at the joints between the door frame and the door panel.

[0008] The track is set as an arc surface at one end near the door frame, and the side curve of the arc surface is the same as the rotation trajectory line of the door panel.

[0009] This utility model of a large, threshold-free, hydraulically watertight door has the following advantages: This large, threshold-free hydraulic watertight door is equipped with a track device with ball bearings inside. The ball bearings rotate to assist the door panel in lifting upwards, thereby reducing the power required by the hydraulic cylinder in the initial opening of the door panel, avoiding damage to the connection between the cylinder and the door panel, and improving the safety of the hydraulic watertight door. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the large, threshold-free hydraulic watertight door of this utility model.

[0011] Figure 2 This is a schematic diagram of the large, threshold-free, hydraulic watertight door of this utility model when the door panel is opened.

[0012] Figure 3 This is an enlarged view of the track opening and closing device of the large threshold-free hydraulic watertight door of this utility model.

[0013] Figure 4 This is a front view of the large threshold-free hydraulic watertight door of this utility model.

[0014] Figure 5 for Figure 4 Enlarged view of part A.

[0015] In the diagram: 1. Door frame; 2. Door panel; 3. Electrical system; 4. Hydraulic system; 5. Hinge device; 6. Limiting device; 7. Locking device; 8. Sealing strip; 9. Track opening and closing device; 10. Hydraulic cylinder; 11. Connecting rod; 12. Track; 13. Door panel opening and closing device; 14. Hydraulic cylinder. Detailed Implementation

[0016] like Figures 1 to 5 This utility model relates to a large, threshold-free, hydraulically sealed watertight door, comprising a door frame 1, a door panel 2, an electrical system 3, and a hydraulic system 4. The door panel 2 and the door frame 1 are connected by a hinge device 5. A limiting device 6, which is an infrared sensor, is installed at the highest point of the hinge device 5's movement trajectory on the door frame 1. When the sensor detects that the hinge device 5 has rotated to the specified height, it transmits a signal to the electrical system 3, which then controls the hydraulic system 4 to stop the hinge device 5 from rotating. A locking device 7 is installed between the door frame 1 and the door panel 2 to lock the door panel 2 when it is closed. A sealing strip 8 is installed at the joint between the door frame 1 and the door panel 2.

[0017] A track opening and closing device 9 is provided on the inner side of the bottom of the door frame 1. The track opening and closing device 9 includes a hydraulic cylinder 10 and a connecting rod 11. The end of the cylinder body of the hydraulic cylinder 10 is hinged to the door frame 1 via a connecting lug. The front end of the rod body of the hydraulic cylinder 10 is hinged to one end of the connecting rod 11 via a hinge. The other end of the connecting rod 11 is hinged to the top of a section of track 12 via a connecting lug. The hydraulic cylinder 10 drives the track 12 to move. The track 12 can fall on the back side of the door frame 1 and be close to the door frame 1. The end of the track 12 near the door frame 1 is set as an arc surface. The side curve of this arc surface is the same as the rotation trajectory line of the door panel 2. In addition, ball bearings are inserted into the track 12. The ball bearings fill the grooves of the track 12, so they will not move back and forth in the grooves, but will only rotate, thus facilitating the sliding of the door panel 2 on the track 12.

[0018] On the left and right sides of the door frame 1, near the middle of the door panel 2, a door panel opening and closing device 13 is respectively provided. The door panel opening and closing device 13 includes a hydraulic cylinder 14. The end of the cylinder body of the hydraulic cylinder 14 is hinged to the door frame 1 through a connecting ear, and the front end of the rod body of the hydraulic cylinder 14 is hinged to the back of the door panel 2 through a connecting ear.

[0019] The electrical system 3 is connected to the hydraulic system 4, and the electrical system 3 is also connected to the limit device 6. The hydraulic system 4 is connected to the hinge device 5, the locking device 7, the track opening and closing device 9, and the door panel opening and closing device 13, and is used to control the movement of each component.

[0020] The working principle of this large, threshold-free hydraulic watertight door is as follows: First, the hydraulic system controls the locking device to unlock the door panel. Simultaneously, it controls the track opening and closing device to lower the track to the back of the door panel. The hydraulic cylinder applies a downward force to temporarily fix the track. Then, the hydraulic system activates the door panel opening and closing device, pushing the door panel diagonally upward. After the door panel moves inward and is raised to a certain height, it can land on the groove of the track equipped with ball bearings. With the assistance of the ball bearings sliding and the push of the hydraulic cylinder, the door panel slowly rises. When the door panel rises and exceeds the highest point of the track, it leaves the track. At this point, the lever arm of the hydraulic cylinder has reached a certain length, and the hydraulic cylinder does not need to apply a large force. It only needs to drive the door panel upward like a conventional hydraulic cylinder. When the limit device detects that the hinge device has rotated to the specified height, the electrical system controls the hydraulic system to stop the hinge device from rotating, allowing the door panel to open fully.

Claims

1. A large, threshold-free hydraulic watertight door, characterized in that: The system includes a door frame, door panel, electrical system, and hydraulic system. The door panel and door frame are connected by a hinge device, and a locking device is installed between the door frame and door panel. A track opening and closing device is provided on the inner side of the bottom of the door frame. The track opening and closing device includes a hydraulic cylinder and a connecting rod. The end of the hydraulic cylinder is hinged to the door frame through a connecting lug, and the front end of the hydraulic cylinder rod is hinged to one end of the connecting rod through a hinge. The other end of the connecting rod is hinged to the top of a section of track through a connecting lug. The hydraulic cylinder drives the track to move, and the track can fall on the back side of the door frame and be close to the door frame. Ball bearings are locked in the track, and the ball bearings fill the grooves of the track. The door panel can slide on the track. A door panel opening and closing device is provided on the left and right sides of the door frame near the middle of the door panel. The door panel opening and closing device includes a hydraulic cylinder. The end of the hydraulic cylinder is hinged to the door frame through a connecting lug, and the front end of the hydraulic cylinder rod is hinged to the back of the door panel through a connecting lug.

2. The large threshold-free hydraulic watertight door according to claim 1, characterized in that: The electrical system is connected to the hydraulic system and also to the limit device. The hydraulic system is connected to the hinge device, locking device, track opening and closing device, and door panel opening and closing device.

3. The large threshold-free hydraulic watertight door according to claim 1, characterized in that: The door frame is equipped with a limit device at the highest point of the hinge mechanism's movement trajectory. The limit device is an infrared sensor.

4. The large threshold-free hydraulic watertight door according to claim 1, characterized in that: Sealing strips are installed at the joints between the door frame and the door panel.

5. The large threshold-free hydraulic watertight door according to claim 1, characterized in that: The track is set as an arc surface at one end near the door frame, and the side curve of the arc surface is the same as the rotation trajectory line of the door panel.

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